Vehicle-alarm



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VIHICLI: ALARM.

APPLICATION FILED SEPT. 30| 1918.

1,328,173, Patented Jan. 13, 1920. I

2 SHEETS-SHEET l.

l. WMCGOWAN.

Averucui ALARM.

APPLICATION FILED SEPT. 30, 1918.

1,328, 173. Patented Jan. 13, 1920.

2 SHEETS-SHEEY 2.

Ha/Z501; Jmes M. c' owdz/ t .TTTan sTaTns TATniTT onirica.

JAMES' W. MCGOWAN, OF OMAHA, NEBRASKA.

VEHICLE-ALARM.

Specification of Letters Patent.

Patented Janf13, 1920.

Appli-cation filed September 30, 1918. Serial No. 256,346.

a full, clear, and exact description of the invention, such as will'enable others skilled in the art to which it appertains to make and usethe same.

This invention j relates to vehicle alarms and has for an object toprovide an alarm which may be applied to a vehicle which will be soundedwhen the vehicle is moved irrespective of the motive power applied tothe vehicle and which is so positioned that it can not be easily orconveniently tampered with by unauthorized persons.

A further object of the invention is to provide an alarm especiallyadapted for auto-vehicles having moving parts connected with some of theparts of the vehicle which move irrespective of the movement of thepower plant whereby any movement by man ual or animal power will atroncesound the alarm, l

A further object of the invention is to pro- Y vide in a vehicle alarmthe various -details of construction for promptly carrying into effectthe main object of the invention. Y

Vith these andother objectsin view the invention comprises certain novelfeatures of construction, combination and arrangement of parts as willbe `hereinafter `-more* fullyV described and claimedv-`r In the drawing,

Figure'V 1 isA a view in vertical section of the improved alarmmechanism applied to a conventional automobile transmission mechanism.

Fig. 2 is a top plan view of the alarm mechanism applied to an'automobile chassis.

Fig. 3 is a transverse sectional view through the alarm mechanism takenonline 3 3 of Fig. l1. l

Fig. 4 is a top plan view of the connection between the locking diskaudits actuating Fig. is a view of the locking disk and actuatingspindle in side elevation showing` line 4 4 asin the position of'Fig. 4.

Fig. 6 is a sectional Vview taken on line 6-6 of Fig. 3. Y a

vLike characters of reference lindicate corresponding views.

The improved alarm mechanism which forms the subject matter of thepresent application comprises a casing or housing 10 adapted to besecured to the chassis of an automobile indicated at 11.

VThe housing 10 surrounds the casingA 12 which in turn surrounds theYshaft 13 of the transmission mechanism from the .power parts throughoutthe kseveral plant indicatedconventionally. .at 14 to the rear axle.

It is to be understood that instead of attaching to and taking powerfrom the drive shaft 13 the rear aXle may be employed inv like mannerwithout change of construction.

The housing 12 of the drive shaft 13 is cut away as indicated at 15 anda friction disk 16 positioned to bear directly upon and recelve rotarymotion from the drive shaft13.A

The friction disk 16 is mounted in any approved manner to be lifted outof engagement with the drive shaft 13 when it is desired to disconnectthe mechanism from the moving par. As shown inthe drawing1 the said disk16 is journaled upon ashaft 17 pivoted at 18 and slidable relativefto akeeper 19. 1n the position shown at Fig. 1 the disk 16 is in engagementwith the driving shaft 13 but when the journal shaft 17 is raised thedisk 16 is moved slightly 'out of engagement with and does not receivemo- Y tion from the drive shaft 13. c

To raise the disk 16 a leverv 20 is provided fulcrumed at 21 andconnected with ythe shaft 17 vby a link 22 and a yspring 23 norshaft 26is by means .of a helical Vspring 27 surrounding thev shaft V26engaged'by a coland with its oppositeend as at 29engaged`1 by the pinion25. A pin 30 is carried by the shaft 26 in position tobe engaged by thepart 29 of the spring when the spring has been'rotated to a sufficientextent to'engage such pin. This constructionprevents the aclar 28xedvupon the said shaftat'one end tuation of the alarm from a slight bumpor Va very limited movement of the vehicle.

Bearing upon the end of the lever 20 opposite the link 22 is a lockingdisk 31 having a cam face 32 indicatedmore particularly at Fig. 5, Asshown at Fig. 1 the cam disk 31 is in position to permit the disk 16 tobe Vmaintained in engagement with the shaft 13 by the spring 23. `Whenthe cam disk 31 is rotated the end of the lever 20 opposite the link 22is depressed raising the shaft 17 and therewith the disk 16 out ofengagement ,With the shaft 13.

To rotate the cam disk 31 a spindle 32 is employed having bifurcatedextremities as indicated at 33, the spindle extending upwardly through abranch 34 of the housing 10 and provided upon its upper end With akey-receiving socket preferably flush with the floor ofthe automobileindicated at 36 and actuated by a key 37.

To prevent the removal of the lock spindle 32 and the insertion of someinstrument for rotating` the disk 31 the bifurcated ends 33 of the saidspindle 32 are simply inserted in the depressions in thedisk 31 asindicated at Figs. 4 and 5. If the spindle 32 is bent or otherwisedislocated from the disk 31 cover members 39 are employed which arepivoted to the disk 31 at 40 and actuated by spr-ing 41 so that whenthe. bifurcated ends 33 are removed from the socket the said covermembers 39 will be moved by the cal connection.

spring 41 to cover the depression 38 and prevent the insertion of anyunauthorized tool for the purpose of rotating the disk 31.

The disk 31 is also provided with a finger 42 as shown at F ig. 1 whichforms connection With the electric Wire 43 from the magneto groundingthe magneto and preventing the starting of the car when the parts are inthe `position shown at Fig; 1 and only When the locking disk has beenrotated to lift the friction disk 31 from Contact With the shaft 13 anddisconnect the finger 42 from electri- This is to prevent the ac-.'tujal o'vvner of the car from forgetfully startingliis car,A With thealarm mechanism in the position of being actuated and insuring lproperdisconnection of the alarm mechanism from theact'uating parts before thecar can be started. y

5 hile of course the electric connection from the magneto to the groundforms no actual part ofthe present invention it is a desirable adjunctwhereby the alarm mechanism is made more-convenient for practicaloperation. Y

It is believedthat the operation of the device Will be fully and clearlyunderstood fromgthe description of the several parts and their operationhereinbefore contained.

l. claim:

1. The combination vvith a vehicle having a driving shaft in positiveconnection Withment with the driving shaft and private means forrendering` said alarm inoperative.

2. The combination vvith a vehicle having a driving shaft-in positiveengagement With the Wheels, a disk in frictional engagement With thedriving` shaft adapted to actuate an alarm Without regard to thedirection of rotation, a lever mounted to lift the axis of the frictiondisk to disengage it from the driving shaft and akey actuated camadapted to actuate the lever and private means for rendering said alarminoperative.

' 3. The combination with a vehicle having a part moving With eachmovement of the vehicle, of a mechanically operated alarm mounted uponthe vehicle, and provided with movable parts engaging with the movingparts of the vehicle and actuating said alarm on movement of saidvehicle irrespective of direction, and private means for rendering saidalarm inoperative.

4. The combination with a vehicle having a part. moving vvith eachmovement of the vehicle, of a mechanically operated alarm, and means foroperating` said alarm comprising, a rotatable member, means for drivingsaid rotatable member from said moving part, means for operating saidmechanical alarm irrespective of the direction of rotation driven bysaid rotatable member, Aand means for moving said rotatable member intoand out of engagement' With said driving means and private means forrendering said alarm inoperative. f

5. The combination Vwith a vehicle having a driving shaft in positiveengagement with the Wheels, a mechanicalalarm, a rotatable member inengagement with the driving shaft adapted to actuate said alarm`irrespective of the direction-of rotatioma lever adapted to lift theaxis of said rotatable member to disengage it from the shaft, and

a key operatedcam adapted tofactuate said,

7. The combination with a vehicle having;r

a part moving with each movement of the vehicle, of a mechanicallyoperated ala-rin, and means for operating said alarm comprising, arotatable member, means for driving' said rotatable member from saidmoving part, means for operating said mechanical alarm driven by saidrotatable member comprising a shaft connected to said alarm, gear teethcarried by said rotatable member and a pinion mounted. on said shaft andcapable of a limited rotation thereon and engaging the teeth on saidrotatable member and private means for rendering said alarm inoperative.

8. The combination with a vehicle having a part moving With eachmovement of the vehicle, of a mechanically operated alarm, and means foroperating said alarm comprising, a rotatable member, means for drivingsaid rotatable member from said moving part, means for operating saidmechanical alarm driven by said rotatable member, comprising a shaftconnected to said alarm, gear teeth carriedby said rotatable member, apinion loosely`mounted on said shaft and engaging said teeth, a coiledspring mounted on said shaft and secured at one end and having anextension on the other` end secured to said pinion and a pin on saidshaft adapted to engage said extension When the pinion is rotated.

9. The combination With a vehicle having a rotary member, of a frictionannulus for engagement with a rotary part of said vehicle, an internalgear on said annulus for engaging a pinion and operating an alarm,

cle, an internal gear on said annulus for engaging a pinion andoperating an alarm and means for throwing said mechanism in and out ofrotating engagement vvith said rotary part of said vehicle, and meansfor preventing the operation of said alarm eX- cept When the vehicle isactually traveling.V

said vehicle, an alarm and means for actu' ating said alarm by saidrotary member, and

means for stopping the operation of sai-d ignition system prior to theoperationk of said alarm.

13. In combination, a rotary member in a vehicle, a unitary housingincasing said rotary member and projecting through the floor of saidvehicle, and means Within said housing for operating an alarm and theengagement of said operating means by a key inserted into said housing.

14. In combination, a rotary member in a i ment With said rotary member,private means for rendering said alarm operative or inoperative, andmeans for automatically preventing the operation of said alarm during apartial movement of said rotary member.

In testimony whereof I affix my signature.

JAMES vv. MCGOWAN.

